Commit | Line | Data |
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bd5635a1 | 1 | /* Symbol table definitions for GDB. |
ad3b8c4a JM |
2 | Copyright 1986, 89, 91, 92, 93, 94, 95, 96, 1998 |
3 | Free Software Foundation, Inc. | |
bd5635a1 RP |
4 | |
5 | This file is part of GDB. | |
6 | ||
4a35d6e9 | 7 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 8 | it under the terms of the GNU General Public License as published by |
4a35d6e9 FF |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. | |
bd5635a1 | 11 | |
4a35d6e9 | 12 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
4a35d6e9 | 18 | along with this program; if not, write to the Free Software |
3f687c78 | 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
bd5635a1 RP |
20 | |
21 | #if !defined (SYMTAB_H) | |
22 | #define SYMTAB_H 1 | |
bd5635a1 RP |
23 | |
24 | /* Some definitions and declarations to go with use of obstacks. */ | |
2e4964ad FF |
25 | |
26 | #include "obstack.h" | |
bd5635a1 RP |
27 | #define obstack_chunk_alloc xmalloc |
28 | #define obstack_chunk_free free | |
2ad5709f | 29 | #include "bcache.h" |
bd5635a1 | 30 | |
ad3b8c4a JM |
31 | #include "gnu-regex.h" |
32 | ||
2fe3b329 PS |
33 | /* Don't do this; it means that if some .o's are compiled with GNU C |
34 | and some are not (easy to do accidentally the way we configure | |
35 | things; also it is a pain to have to "make clean" every time you | |
36 | want to switch compilers), then GDB dies a horrible death. */ | |
37 | /* GNU C supports enums that are bitfields. Some compilers don't. */ | |
38 | #if 0 && defined(__GNUC__) && !defined(BYTE_BITFIELD) | |
21578747 JG |
39 | #define BYTE_BITFIELD :8; |
40 | #else | |
41 | #define BYTE_BITFIELD /*nothing*/ | |
42 | #endif | |
43 | ||
2e4964ad | 44 | /* Define a structure for the information that is common to all symbol types, |
d63aae7f JK |
45 | including minimal symbols, partial symbols, and full symbols. In a |
46 | multilanguage environment, some language specific information may need to | |
21578747 JG |
47 | be recorded along with each symbol. |
48 | ||
49 | These fields are ordered to encourage good packing, since we frequently | |
50 | have tens or hundreds of thousands of these. */ | |
2e4964ad FF |
51 | |
52 | struct general_symbol_info | |
53 | { | |
54 | /* Name of the symbol. This is a required field. Storage for the name is | |
55 | allocated on the psymbol_obstack or symbol_obstack for the associated | |
56 | objfile. */ | |
57 | ||
58 | char *name; | |
59 | ||
fce30fa1 JK |
60 | /* Value of the symbol. Which member of this union to use, and what |
61 | it means, depends on what kind of symbol this is and its | |
62 | SYMBOL_CLASS. See comments there for more details. All of these | |
63 | are in host byte order (though what they point to might be in | |
64 | target byte order, e.g. LOC_CONST_BYTES). */ | |
2e4964ad FF |
65 | |
66 | union | |
67 | { | |
2fe3b329 PS |
68 | /* The fact that this is a long not a LONGEST mainly limits the |
69 | range of a LOC_CONST. Since LOC_CONST_BYTES exists, I'm not | |
70 | sure that is a big deal. */ | |
fad466eb | 71 | long ivalue; |
2e4964ad | 72 | |
2e4964ad FF |
73 | struct block *block; |
74 | ||
2e4964ad FF |
75 | char *bytes; |
76 | ||
2e4964ad FF |
77 | CORE_ADDR address; |
78 | ||
79 | /* for opaque typedef struct chain */ | |
bd5635a1 | 80 | |
2e4964ad FF |
81 | struct symbol *chain; |
82 | } | |
83 | value; | |
84 | ||
d63aae7f JK |
85 | /* Since one and only one language can apply, wrap the language specific |
86 | information inside a union. */ | |
2e4964ad | 87 | |
d63aae7f JK |
88 | union |
89 | { | |
ad3b8c4a JM |
90 | struct cplus_specific /* For C++ */ |
91 | /* start-sanitize-java */ | |
92 | /* and Java */ | |
93 | /* end-sanitize-java */ | |
d63aae7f JK |
94 | { |
95 | char *demangled_name; | |
96 | } cplus_specific; | |
97 | struct chill_specific /* For Chill */ | |
2e4964ad | 98 | { |
d63aae7f JK |
99 | char *demangled_name; |
100 | } chill_specific; | |
101 | } language_specific; | |
ca6a826d | 102 | |
21578747 JG |
103 | /* Record the source code language that applies to this symbol. |
104 | This is used to select one of the fields from the language specific | |
105 | union above. */ | |
106 | ||
107 | enum language language BYTE_BITFIELD; | |
108 | ||
ca6a826d PS |
109 | /* Which section is this symbol in? This is an index into |
110 | section_offsets for this objfile. Negative means that the symbol | |
d63aae7f | 111 | does not get relocated relative to a section. |
b86a1b3b JK |
112 | Disclaimer: currently this is just used for xcoff, so don't |
113 | expect all symbol-reading code to set it correctly (the ELF code | |
114 | also tries to set it correctly). */ | |
d63aae7f | 115 | |
fb155ce3 | 116 | short section; |
56e327b3 FF |
117 | |
118 | /* The bfd section associated with this symbol. */ | |
119 | ||
120 | asection *bfd_section; | |
2e4964ad FF |
121 | }; |
122 | ||
56e327b3 FF |
123 | extern CORE_ADDR symbol_overlayed_address PARAMS((CORE_ADDR, asection *)); |
124 | ||
2e4964ad | 125 | #define SYMBOL_NAME(symbol) (symbol)->ginfo.name |
fad466eb | 126 | #define SYMBOL_VALUE(symbol) (symbol)->ginfo.value.ivalue |
2e4964ad FF |
127 | #define SYMBOL_VALUE_ADDRESS(symbol) (symbol)->ginfo.value.address |
128 | #define SYMBOL_VALUE_BYTES(symbol) (symbol)->ginfo.value.bytes | |
129 | #define SYMBOL_BLOCK_VALUE(symbol) (symbol)->ginfo.value.block | |
130 | #define SYMBOL_VALUE_CHAIN(symbol) (symbol)->ginfo.value.chain | |
d63aae7f | 131 | #define SYMBOL_LANGUAGE(symbol) (symbol)->ginfo.language |
ca6a826d | 132 | #define SYMBOL_SECTION(symbol) (symbol)->ginfo.section |
56e327b3 | 133 | #define SYMBOL_BFD_SECTION(symbol) (symbol)->ginfo.bfd_section |
ece2e98a JG |
134 | |
135 | #define SYMBOL_CPLUS_DEMANGLED_NAME(symbol) \ | |
d63aae7f | 136 | (symbol)->ginfo.language_specific.cplus_specific.demangled_name |
2e4964ad | 137 | |
ece2e98a JG |
138 | /* Macro that initializes the language dependent portion of a symbol |
139 | depending upon the language for the symbol. */ | |
140 | ||
141 | #define SYMBOL_INIT_LANGUAGE_SPECIFIC(symbol,language) \ | |
142 | do { \ | |
143 | SYMBOL_LANGUAGE (symbol) = language; \ | |
d719efc6 | 144 | if (SYMBOL_LANGUAGE (symbol) == language_cplus \ |
ad3b8c4a JM |
145 | /* start-sanitize-java */ \ |
146 | || SYMBOL_LANGUAGE (symbol) == language_java \ | |
147 | /* end-sanitize-java */ \ | |
148 | ) \ | |
ece2e98a JG |
149 | { \ |
150 | SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = NULL; \ | |
151 | } \ | |
ece2e98a JG |
152 | else if (SYMBOL_LANGUAGE (symbol) == language_chill) \ |
153 | { \ | |
154 | SYMBOL_CHILL_DEMANGLED_NAME (symbol) = NULL; \ | |
155 | } \ | |
ece2e98a JG |
156 | else \ |
157 | { \ | |
d63aae7f JK |
158 | memset (&(symbol)->ginfo.language_specific, 0, \ |
159 | sizeof ((symbol)->ginfo.language_specific)); \ | |
ece2e98a JG |
160 | } \ |
161 | } while (0) | |
162 | ||
163 | /* Macro that attempts to initialize the demangled name for a symbol, | |
164 | based on the language of that symbol. If the language is set to | |
165 | language_auto, it will attempt to find any demangling algorithm | |
166 | that works and then set the language appropriately. If no demangling | |
167 | of any kind is found, the language is set back to language_unknown, | |
168 | so we can avoid doing this work again the next time we encounter | |
169 | the symbol. Any required space to store the name is obtained from the | |
170 | specified obstack. */ | |
171 | ||
172 | #define SYMBOL_INIT_DEMANGLED_NAME(symbol,obstack) \ | |
173 | do { \ | |
174 | char *demangled = NULL; \ | |
175 | if (SYMBOL_LANGUAGE (symbol) == language_cplus \ | |
176 | || SYMBOL_LANGUAGE (symbol) == language_auto) \ | |
177 | { \ | |
178 | demangled = \ | |
179 | cplus_demangle (SYMBOL_NAME (symbol), DMGL_PARAMS | DMGL_ANSI);\ | |
180 | if (demangled != NULL) \ | |
181 | { \ | |
182 | SYMBOL_LANGUAGE (symbol) = language_cplus; \ | |
183 | SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = \ | |
184 | obsavestring (demangled, strlen (demangled), (obstack)); \ | |
185 | free (demangled); \ | |
186 | } \ | |
187 | else \ | |
188 | { \ | |
189 | SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = NULL; \ | |
190 | } \ | |
191 | } \ | |
ad3b8c4a | 192 | /* start-sanitize-java */ \ |
d719efc6 DP |
193 | if (SYMBOL_LANGUAGE (symbol) == language_java) \ |
194 | { \ | |
195 | demangled = \ | |
196 | cplus_demangle (SYMBOL_NAME (symbol), \ | |
197 | DMGL_PARAMS | DMGL_ANSI | DMGL_JAVA); \ | |
198 | if (demangled != NULL) \ | |
199 | { \ | |
200 | SYMBOL_LANGUAGE (symbol) = language_java; \ | |
201 | SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = \ | |
202 | obsavestring (demangled, strlen (demangled), (obstack)); \ | |
203 | free (demangled); \ | |
204 | } \ | |
205 | else \ | |
206 | { \ | |
207 | SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = NULL; \ | |
208 | } \ | |
209 | } \ | |
ad3b8c4a | 210 | /* end-sanitize-java */ \ |
ece2e98a JG |
211 | if (demangled == NULL \ |
212 | && (SYMBOL_LANGUAGE (symbol) == language_chill \ | |
213 | || SYMBOL_LANGUAGE (symbol) == language_auto)) \ | |
214 | { \ | |
215 | demangled = \ | |
216 | chill_demangle (SYMBOL_NAME (symbol)); \ | |
217 | if (demangled != NULL) \ | |
218 | { \ | |
219 | SYMBOL_LANGUAGE (symbol) = language_chill; \ | |
220 | SYMBOL_CHILL_DEMANGLED_NAME (symbol) = \ | |
221 | obsavestring (demangled, strlen (demangled), (obstack)); \ | |
222 | free (demangled); \ | |
223 | } \ | |
224 | else \ | |
225 | { \ | |
226 | SYMBOL_CHILL_DEMANGLED_NAME (symbol) = NULL; \ | |
227 | } \ | |
228 | } \ | |
ece2e98a JG |
229 | if (SYMBOL_LANGUAGE (symbol) == language_auto) \ |
230 | { \ | |
231 | SYMBOL_LANGUAGE (symbol) = language_unknown; \ | |
232 | } \ | |
233 | } while (0) | |
234 | ||
235 | /* Macro that returns the demangled name for a symbol based on the language | |
236 | for that symbol. If no demangled name exists, returns NULL. */ | |
237 | ||
ece2e98a JG |
238 | #define SYMBOL_DEMANGLED_NAME(symbol) \ |
239 | (SYMBOL_LANGUAGE (symbol) == language_cplus \ | |
ad3b8c4a | 240 | /* start-sanitize-java */ \ |
d719efc6 | 241 | || SYMBOL_LANGUAGE (symbol) == language_java \ |
ad3b8c4a | 242 | /* end-sanitize-java */ \ |
ece2e98a JG |
243 | ? SYMBOL_CPLUS_DEMANGLED_NAME (symbol) \ |
244 | : (SYMBOL_LANGUAGE (symbol) == language_chill \ | |
245 | ? SYMBOL_CHILL_DEMANGLED_NAME (symbol) \ | |
246 | : NULL)) | |
247 | ||
5aefc1ca | 248 | #define SYMBOL_CHILL_DEMANGLED_NAME(symbol) \ |
d63aae7f | 249 | (symbol)->ginfo.language_specific.chill_specific.demangled_name |
ece2e98a | 250 | |
2e4964ad FF |
251 | /* Macro that returns the "natural source name" of a symbol. In C++ this is |
252 | the "demangled" form of the name if demangle is on and the "mangled" form | |
253 | of the name if demangle is off. In other languages this is just the | |
ece2e98a | 254 | symbol name. The result should never be NULL. */ |
2e4964ad | 255 | |
ece2e98a JG |
256 | #define SYMBOL_SOURCE_NAME(symbol) \ |
257 | (demangle && SYMBOL_DEMANGLED_NAME (symbol) != NULL \ | |
258 | ? SYMBOL_DEMANGLED_NAME (symbol) \ | |
259 | : SYMBOL_NAME (symbol)) | |
2e4964ad FF |
260 | |
261 | /* Macro that returns the "natural assembly name" of a symbol. In C++ this is | |
262 | the "mangled" form of the name if demangle is off, or if demangle is on and | |
263 | asm_demangle is off. Otherwise if asm_demangle is on it is the "demangled" | |
ece2e98a JG |
264 | form. In other languages this is just the symbol name. The result should |
265 | never be NULL. */ | |
2e4964ad | 266 | |
ece2e98a JG |
267 | #define SYMBOL_LINKAGE_NAME(symbol) \ |
268 | (demangle && asm_demangle && SYMBOL_DEMANGLED_NAME (symbol) != NULL \ | |
269 | ? SYMBOL_DEMANGLED_NAME (symbol) \ | |
270 | : SYMBOL_NAME (symbol)) | |
2e4964ad FF |
271 | |
272 | /* Macro that tests a symbol for a match against a specified name string. | |
273 | First test the unencoded name, then looks for and test a C++ encoded | |
274 | name if it exists. Note that whitespace is ignored while attempting to | |
275 | match a C++ encoded name, so that "foo::bar(int,long)" is the same as | |
276 | "foo :: bar (int, long)". | |
277 | Evaluates to zero if the match fails, or nonzero if it succeeds. */ | |
278 | ||
ece2e98a JG |
279 | #define SYMBOL_MATCHES_NAME(symbol, name) \ |
280 | (STREQ (SYMBOL_NAME (symbol), (name)) \ | |
281 | || (SYMBOL_DEMANGLED_NAME (symbol) != NULL \ | |
282 | && strcmp_iw (SYMBOL_DEMANGLED_NAME (symbol), (name)) == 0)) | |
2e4964ad FF |
283 | |
284 | /* Macro that tests a symbol for an re-match against the last compiled regular | |
285 | expression. First test the unencoded name, then look for and test a C++ | |
286 | encoded name if it exists. | |
287 | Evaluates to zero if the match fails, or nonzero if it succeeds. */ | |
288 | ||
ece2e98a JG |
289 | #define SYMBOL_MATCHES_REGEXP(symbol) \ |
290 | (re_exec (SYMBOL_NAME (symbol)) != 0 \ | |
291 | || (SYMBOL_DEMANGLED_NAME (symbol) != NULL \ | |
292 | && re_exec (SYMBOL_DEMANGLED_NAME (symbol)) != 0)) | |
2e4964ad | 293 | |
b0246b3b | 294 | /* Define a simple structure used to hold some very basic information about |
2e4964ad FF |
295 | all defined global symbols (text, data, bss, abs, etc). The only required |
296 | information is the general_symbol_info. | |
297 | ||
298 | In many cases, even if a file was compiled with no special options for | |
299 | debugging at all, as long as was not stripped it will contain sufficient | |
300 | information to build a useful minimal symbol table using this structure. | |
301 | Even when a file contains enough debugging information to build a full | |
302 | symbol table, these minimal symbols are still useful for quickly mapping | |
303 | between names and addresses, and vice versa. They are also sometimes | |
304 | used to figure out what full symbol table entries need to be read in. */ | |
bd5635a1 | 305 | |
b0246b3b FF |
306 | struct minimal_symbol |
307 | { | |
bd5635a1 | 308 | |
fce30fa1 JK |
309 | /* The general symbol info required for all types of symbols. |
310 | ||
311 | The SYMBOL_VALUE_ADDRESS contains the address that this symbol | |
312 | corresponds to. */ | |
bd5635a1 | 313 | |
2e4964ad | 314 | struct general_symbol_info ginfo; |
bd5635a1 | 315 | |
ad3b8c4a JM |
316 | /* The info field is available for caching machine-specific information |
317 | so it doesn't have to rederive the info constantly (over a serial line). | |
318 | It is initialized to zero and stays that way until target-dependent code | |
319 | sets it. Storage for any data pointed to by this field should be allo- | |
320 | cated on the symbol_obstack for the associated objfile. | |
321 | The type would be "void *" except for reasons of compatibility with older | |
322 | compilers. This field is optional. | |
323 | ||
324 | Currently, the AMD 29000 tdep.c uses it to remember things it has decoded | |
325 | from the instructions in the function header, and the MIPS-16 code uses | |
326 | it to identify 16-bit procedures. */ | |
b0246b3b FF |
327 | |
328 | char *info; | |
329 | ||
3f687c78 SG |
330 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
331 | /* Which source file is this symbol in? Only relevant for mst_file_*. */ | |
332 | char *filename; | |
333 | #endif | |
334 | ||
b0246b3b FF |
335 | /* Classification types for this symbol. These should be taken as "advisory |
336 | only", since if gdb can't easily figure out a classification it simply | |
337 | selects mst_unknown. It may also have to guess when it can't figure out | |
338 | which is a better match between two types (mst_data versus mst_bss) for | |
339 | example. Since the minimal symbol info is sometimes derived from the | |
340 | BFD library's view of a file, we need to live with what information bfd | |
341 | supplies. */ | |
342 | ||
343 | enum minimal_symbol_type | |
bd5635a1 | 344 | { |
b0246b3b FF |
345 | mst_unknown = 0, /* Unknown type, the default */ |
346 | mst_text, /* Generally executable instructions */ | |
347 | mst_data, /* Generally initialized data */ | |
348 | mst_bss, /* Generally uninitialized data */ | |
313dd520 | 349 | mst_abs, /* Generally absolute (nonrelocatable) */ |
2fe3b329 PS |
350 | /* GDB uses mst_solib_trampoline for the start address of a shared |
351 | library trampoline entry. Breakpoints for shared library functions | |
352 | are put there if the shared library is not yet loaded. | |
353 | After the shared library is loaded, lookup_minimal_symbol will | |
354 | prefer the minimal symbol from the shared library (usually | |
355 | a mst_text symbol) over the mst_solib_trampoline symbol, and the | |
356 | breakpoints will be moved to their true address in the shared | |
357 | library via breakpoint_re_set. */ | |
358 | mst_solib_trampoline, /* Shared library trampoline code */ | |
313dd520 JK |
359 | /* For the mst_file* types, the names are only guaranteed to be unique |
360 | within a given .o file. */ | |
361 | mst_file_text, /* Static version of mst_text */ | |
362 | mst_file_data, /* Static version of mst_data */ | |
363 | mst_file_bss /* Static version of mst_bss */ | |
21578747 | 364 | } type BYTE_BITFIELD; |
bd5635a1 | 365 | }; |
7e258d18 | 366 | |
2e4964ad FF |
367 | #define MSYMBOL_INFO(msymbol) (msymbol)->info |
368 | #define MSYMBOL_TYPE(msymbol) (msymbol)->type | |
369 | ||
bd5635a1 RP |
370 | \f |
371 | /* All of the name-scope contours of the program | |
372 | are represented by `struct block' objects. | |
373 | All of these objects are pointed to by the blockvector. | |
374 | ||
375 | Each block represents one name scope. | |
376 | Each lexical context has its own block. | |
377 | ||
0b28c260 JK |
378 | The blockvector begins with some special blocks. |
379 | The GLOBAL_BLOCK contains all the symbols defined in this compilation | |
bd5635a1 | 380 | whose scope is the entire program linked together. |
0b28c260 | 381 | The STATIC_BLOCK contains all the symbols whose scope is the |
bd5635a1 | 382 | entire compilation excluding other separate compilations. |
0b28c260 | 383 | Blocks starting with the FIRST_LOCAL_BLOCK are not special. |
bd5635a1 RP |
384 | |
385 | Each block records a range of core addresses for the code that | |
0b28c260 | 386 | is in the scope of the block. The STATIC_BLOCK and GLOBAL_BLOCK |
bd5635a1 RP |
387 | give, for the range of code, the entire range of code produced |
388 | by the compilation that the symbol segment belongs to. | |
389 | ||
390 | The blocks appear in the blockvector | |
391 | in order of increasing starting-address, | |
392 | and, within that, in order of decreasing ending-address. | |
393 | ||
394 | This implies that within the body of one function | |
395 | the blocks appear in the order of a depth-first tree walk. */ | |
396 | ||
397 | struct blockvector | |
398 | { | |
399 | /* Number of blocks in the list. */ | |
400 | int nblocks; | |
401 | /* The blocks themselves. */ | |
402 | struct block *block[1]; | |
403 | }; | |
404 | ||
2e4964ad FF |
405 | #define BLOCKVECTOR_NBLOCKS(blocklist) (blocklist)->nblocks |
406 | #define BLOCKVECTOR_BLOCK(blocklist,n) (blocklist)->block[n] | |
407 | ||
92a29b47 | 408 | /* Special block numbers */ |
2e4964ad FF |
409 | |
410 | #define GLOBAL_BLOCK 0 | |
411 | #define STATIC_BLOCK 1 | |
92a29b47 JG |
412 | #define FIRST_LOCAL_BLOCK 2 |
413 | ||
bd5635a1 RP |
414 | struct block |
415 | { | |
2e4964ad | 416 | |
0b28c260 | 417 | /* Addresses in the executable code that are in this block. */ |
2e4964ad FF |
418 | |
419 | CORE_ADDR startaddr; | |
420 | CORE_ADDR endaddr; | |
421 | ||
0b28c260 JK |
422 | /* The symbol that names this block, if the block is the body of a |
423 | function; otherwise, zero. */ | |
2e4964ad | 424 | |
bd5635a1 | 425 | struct symbol *function; |
2e4964ad FF |
426 | |
427 | /* The `struct block' for the containing block, or 0 if none. | |
0b28c260 JK |
428 | |
429 | The superblock of a top-level local block (i.e. a function in the | |
430 | case of C) is the STATIC_BLOCK. The superblock of the | |
431 | STATIC_BLOCK is the GLOBAL_BLOCK. */ | |
2e4964ad | 432 | |
bd5635a1 | 433 | struct block *superblock; |
2e4964ad | 434 | |
0b28c260 JK |
435 | /* Version of GCC used to compile the function corresponding |
436 | to this block, or 0 if not compiled with GCC. When possible, | |
437 | GCC should be compatible with the native compiler, or if that | |
438 | is not feasible, the differences should be fixed during symbol | |
439 | reading. As of 16 Apr 93, this flag is never used to distinguish | |
440 | between gcc2 and the native compiler. | |
441 | ||
442 | If there is no function corresponding to this block, this meaning | |
443 | of this flag is undefined. */ | |
2e4964ad | 444 | |
bd5635a1 | 445 | unsigned char gcc_compile_flag; |
2e4964ad | 446 | |
bd5635a1 | 447 | /* Number of local symbols. */ |
2e4964ad | 448 | |
bd5635a1 | 449 | int nsyms; |
2e4964ad | 450 | |
54023465 JK |
451 | /* The symbols. If some of them are arguments, then they must be |
452 | in the order in which we would like to print them. */ | |
2e4964ad | 453 | |
bd5635a1 RP |
454 | struct symbol *sym[1]; |
455 | }; | |
bd5635a1 | 456 | |
2e4964ad FF |
457 | #define BLOCK_START(bl) (bl)->startaddr |
458 | #define BLOCK_END(bl) (bl)->endaddr | |
459 | #define BLOCK_NSYMS(bl) (bl)->nsyms | |
460 | #define BLOCK_SYM(bl, n) (bl)->sym[n] | |
461 | #define BLOCK_FUNCTION(bl) (bl)->function | |
462 | #define BLOCK_SUPERBLOCK(bl) (bl)->superblock | |
463 | #define BLOCK_GCC_COMPILED(bl) (bl)->gcc_compile_flag | |
bd5635a1 | 464 | |
54023465 JK |
465 | /* Nonzero if symbols of block BL should be sorted alphabetically. |
466 | Don't sort a block which corresponds to a function. If we did the | |
467 | sorting would have to preserve the order of the symbols for the | |
468 | arguments. */ | |
bd5635a1 | 469 | |
54023465 | 470 | #define BLOCK_SHOULD_SORT(bl) ((bl)->nsyms >= 40 && BLOCK_FUNCTION (bl) == NULL) |
bd5635a1 | 471 | |
2e4964ad FF |
472 | \f |
473 | /* Represent one symbol name; a variable, constant, function or typedef. */ | |
bd5635a1 | 474 | |
2e4964ad FF |
475 | /* Different name spaces for symbols. Looking up a symbol specifies a |
476 | namespace and ignores symbol definitions in other name spaces. */ | |
e02a2ad9 SC |
477 | |
478 | typedef enum | |
bd5635a1 | 479 | { |
2e4964ad FF |
480 | /* UNDEF_NAMESPACE is used when a namespace has not been discovered or |
481 | none of the following apply. This usually indicates an error either | |
482 | in the symbol information or in gdb's handling of symbols. */ | |
483 | ||
484 | UNDEF_NAMESPACE, | |
485 | ||
486 | /* VAR_NAMESPACE is the usual namespace. In C, this contains variables, | |
487 | function names, typedef names and enum type values. */ | |
488 | ||
489 | VAR_NAMESPACE, | |
490 | ||
491 | /* STRUCT_NAMESPACE is used in C to hold struct, union and enum type names. | |
492 | Thus, if `struct foo' is used in a C program, it produces a symbol named | |
493 | `foo' in the STRUCT_NAMESPACE. */ | |
494 | ||
495 | STRUCT_NAMESPACE, | |
496 | ||
497 | /* LABEL_NAMESPACE may be used for names of labels (for gotos); | |
498 | currently it is not used and labels are not recorded at all. */ | |
499 | ||
ad3b8c4a JM |
500 | LABEL_NAMESPACE, |
501 | ||
502 | /* Searching namespaces. These overlap with VAR_NAMESPACE, providing | |
503 | some granularity with the search_symbols function. */ | |
504 | ||
505 | /* Everything in VAR_NAMESPACE minus FUNCTIONS_-, TYPES_-, and | |
506 | METHODS_NAMESPACE */ | |
507 | VARIABLES_NAMESPACE, | |
508 | ||
509 | /* All functions -- for some reason not methods, though. */ | |
510 | FUNCTIONS_NAMESPACE, | |
511 | ||
512 | /* All defined types */ | |
513 | TYPES_NAMESPACE, | |
514 | ||
515 | /* All class methods -- why is this separated out? */ | |
516 | METHODS_NAMESPACE | |
517 | ||
e02a2ad9 | 518 | } namespace_enum; |
bd5635a1 RP |
519 | |
520 | /* An address-class says where to find the value of a symbol. */ | |
521 | ||
522 | enum address_class | |
523 | { | |
2e4964ad FF |
524 | /* Not used; catches errors */ |
525 | ||
526 | LOC_UNDEF, | |
527 | ||
528 | /* Value is constant int SYMBOL_VALUE, host byteorder */ | |
529 | ||
530 | LOC_CONST, | |
531 | ||
532 | /* Value is at fixed address SYMBOL_VALUE_ADDRESS */ | |
533 | ||
534 | LOC_STATIC, | |
535 | ||
fce30fa1 | 536 | /* Value is in register. SYMBOL_VALUE is the register number. */ |
2e4964ad FF |
537 | |
538 | LOC_REGISTER, | |
539 | ||
fce30fa1 | 540 | /* It's an argument; the value is at SYMBOL_VALUE offset in arglist. */ |
2e4964ad FF |
541 | |
542 | LOC_ARG, | |
543 | ||
5afa2040 | 544 | /* Value address is at SYMBOL_VALUE offset in arglist. */ |
2e4964ad FF |
545 | |
546 | LOC_REF_ARG, | |
547 | ||
fce30fa1 JK |
548 | /* Value is in register number SYMBOL_VALUE. Just like LOC_REGISTER |
549 | except this is an argument. Probably the cleaner way to handle | |
550 | this would be to separate address_class (which would include | |
551 | separate ARG and LOCAL to deal with FRAME_ARGS_ADDRESS versus | |
552 | FRAME_LOCALS_ADDRESS), and an is_argument flag. | |
0b28c260 JK |
553 | |
554 | For some symbol formats (stabs, for some compilers at least), | |
5afa2040 JK |
555 | the compiler generates two symbols, an argument and a register. |
556 | In some cases we combine them to a single LOC_REGPARM in symbol | |
9c5c2722 JK |
557 | reading, but currently not for all cases (e.g. it's passed on the |
558 | stack and then loaded into a register). */ | |
2e4964ad FF |
559 | |
560 | LOC_REGPARM, | |
561 | ||
5afa2040 JK |
562 | /* Value is in specified register. Just like LOC_REGPARM except the |
563 | register holds the address of the argument instead of the argument | |
564 | itself. This is currently used for the passing of structs and unions | |
b9298844 JK |
565 | on sparc and hppa. It is also used for call by reference where the |
566 | address is in a register, at least by mipsread.c. */ | |
5afa2040 JK |
567 | |
568 | LOC_REGPARM_ADDR, | |
569 | ||
fce30fa1 | 570 | /* Value is a local variable at SYMBOL_VALUE offset in stack frame. */ |
2e4964ad FF |
571 | |
572 | LOC_LOCAL, | |
573 | ||
574 | /* Value not used; definition in SYMBOL_TYPE. Symbols in the namespace | |
575 | STRUCT_NAMESPACE all have this class. */ | |
576 | ||
577 | LOC_TYPEDEF, | |
578 | ||
579 | /* Value is address SYMBOL_VALUE_ADDRESS in the code */ | |
580 | ||
581 | LOC_LABEL, | |
582 | ||
fce30fa1 JK |
583 | /* In a symbol table, value is SYMBOL_BLOCK_VALUE of a `struct block'. |
584 | In a partial symbol table, SYMBOL_VALUE_ADDRESS is the start address | |
585 | of the block. Function names have this class. */ | |
2e4964ad FF |
586 | |
587 | LOC_BLOCK, | |
588 | ||
ca6a826d | 589 | /* Value is a constant byte-sequence pointed to by SYMBOL_VALUE_BYTES, in |
2e4964ad FF |
590 | target byte order. */ |
591 | ||
592 | LOC_CONST_BYTES, | |
593 | ||
fce30fa1 JK |
594 | /* Value is arg at SYMBOL_VALUE offset in stack frame. Differs from |
595 | LOC_LOCAL in that symbol is an argument; differs from LOC_ARG in | |
596 | that we find it in the frame (FRAME_LOCALS_ADDRESS), not in the | |
597 | arglist (FRAME_ARGS_ADDRESS). Added for i960, which passes args | |
598 | in regs then copies to frame. */ | |
2e4964ad | 599 | |
ca6a826d PS |
600 | LOC_LOCAL_ARG, |
601 | ||
a1c8d76e JK |
602 | /* Value is at SYMBOL_VALUE offset from the current value of |
603 | register number SYMBOL_BASEREG. This exists mainly for the same | |
604 | things that LOC_LOCAL and LOC_ARG do; but we need to do this | |
605 | instead because on 88k DWARF gives us the offset from the | |
606 | frame/stack pointer, rather than the offset from the "canonical | |
607 | frame address" used by COFF, stabs, etc., and we don't know how | |
608 | to convert between these until we start examining prologues. | |
609 | ||
c438b3af JK |
610 | Note that LOC_BASEREG is much less general than a DWARF expression. |
611 | We don't need the generality (at least not yet), and storing a general | |
612 | DWARF expression would presumably take up more space than the existing | |
613 | scheme. */ | |
a1c8d76e JK |
614 | |
615 | LOC_BASEREG, | |
616 | ||
617 | /* Same as LOC_BASEREG but it is an argument. */ | |
618 | ||
619 | LOC_BASEREG_ARG, | |
620 | ||
e02a2ad9 SC |
621 | /* Value is at fixed address, but the address of the variable has |
622 | to be determined from the minimal symbol table whenever the | |
623 | variable is referenced. | |
624 | This happens if debugging information for a global symbol is | |
625 | emitted and the corresponding minimal symbol is defined | |
626 | in another object file or runtime common storage. | |
627 | The linker might even remove the minimal symbol if the global | |
628 | symbol is never referenced, in which case the symbol remains | |
629 | unresolved. */ | |
630 | ||
631 | LOC_UNRESOLVED, | |
632 | ||
ca6a826d | 633 | /* The variable does not actually exist in the program. |
fce30fa1 | 634 | The value is ignored. */ |
2e4964ad | 635 | |
ca6a826d | 636 | LOC_OPTIMIZED_OUT |
bd5635a1 RP |
637 | }; |
638 | ||
d719efc6 DP |
639 | /* Linked list of symbol's live ranges. */ |
640 | ||
ad3b8c4a | 641 | struct range_list |
d719efc6 DP |
642 | { |
643 | CORE_ADDR start; | |
644 | CORE_ADDR end; | |
ad3b8c4a | 645 | struct range_list *next; |
d719efc6 DP |
646 | }; |
647 | ||
ad3b8c4a JM |
648 | /* Linked list of aliases for a particular main/primary symbol. */ |
649 | struct alias_list | |
650 | { | |
651 | struct symbol *sym; | |
652 | struct alias_list *next; | |
653 | }; | |
654 | ||
bd5635a1 RP |
655 | struct symbol |
656 | { | |
2e4964ad FF |
657 | |
658 | /* The general symbol info required for all types of symbols. */ | |
659 | ||
660 | struct general_symbol_info ginfo; | |
661 | ||
21578747 | 662 | /* Data type of value */ |
2e4964ad | 663 | |
21578747 | 664 | struct type *type; |
2e4964ad | 665 | |
21578747 | 666 | /* Name space code. */ |
2e4964ad | 667 | |
56e327b3 FF |
668 | #ifdef __MFC4__ |
669 | /* FIXME: don't conflict with C++'s namespace */ | |
670 | /* would be safer to do a global change for all namespace identifiers. */ | |
671 | #define namespace _namespace | |
672 | #endif | |
e02a2ad9 | 673 | namespace_enum namespace BYTE_BITFIELD; |
2e4964ad | 674 | |
21578747 | 675 | /* Address class */ |
2e4964ad | 676 | |
3f687c78 | 677 | enum address_class aclass BYTE_BITFIELD; |
bd5635a1 | 678 | |
2e4964ad FF |
679 | /* Line number of definition. FIXME: Should we really make the assumption |
680 | that nobody will try to debug files longer than 64K lines? What about | |
681 | machine generated programs? */ | |
682 | ||
bd5635a1 RP |
683 | unsigned short line; |
684 | ||
252f6c65 FF |
685 | /* Some symbols require an additional value to be recorded on a per- |
686 | symbol basis. Stash those values here. */ | |
2e4964ad | 687 | |
252f6c65 FF |
688 | union |
689 | { | |
a1c8d76e JK |
690 | /* Used by LOC_BASEREG and LOC_BASEREG_ARG. */ |
691 | short basereg; | |
252f6c65 FF |
692 | } |
693 | aux_value; | |
d719efc6 | 694 | |
ad3b8c4a JM |
695 | |
696 | /* Link to a list of aliases for this symbol. | |
697 | Only a "primary/main symbol may have aliases. */ | |
698 | struct alias_list *aliases; | |
699 | ||
700 | /* List of ranges where this symbol is active. This is only | |
701 | used by alias symbols at the current time. */ | |
702 | struct range_list *ranges; | |
bd5635a1 RP |
703 | }; |
704 | ||
ad3b8c4a | 705 | |
2e4964ad | 706 | #define SYMBOL_NAMESPACE(symbol) (symbol)->namespace |
3f687c78 | 707 | #define SYMBOL_CLASS(symbol) (symbol)->aclass |
2e4964ad FF |
708 | #define SYMBOL_TYPE(symbol) (symbol)->type |
709 | #define SYMBOL_LINE(symbol) (symbol)->line | |
a1c8d76e | 710 | #define SYMBOL_BASEREG(symbol) (symbol)->aux_value.basereg |
ad3b8c4a JM |
711 | #define SYMBOL_ALIASES(symbol) (symbol)->aliases |
712 | #define SYMBOL_RANGES(symbol) (symbol)->ranges | |
2e4964ad | 713 | \f |
bd5635a1 RP |
714 | /* A partial_symbol records the name, namespace, and address class of |
715 | symbols whose types we have not parsed yet. For functions, it also | |
716 | contains their memory address, so we can find them from a PC value. | |
717 | Each partial_symbol sits in a partial_symtab, all of which are chained | |
b0246b3b | 718 | on a partial symtab list and which points to the corresponding |
bd5635a1 RP |
719 | normal symtab once the partial_symtab has been referenced. */ |
720 | ||
721 | struct partial_symbol | |
722 | { | |
2e4964ad FF |
723 | |
724 | /* The general symbol info required for all types of symbols. */ | |
725 | ||
726 | struct general_symbol_info ginfo; | |
727 | ||
bd5635a1 | 728 | /* Name space code. */ |
2e4964ad | 729 | |
e02a2ad9 | 730 | namespace_enum namespace BYTE_BITFIELD; |
2e4964ad | 731 | |
bd5635a1 | 732 | /* Address class (for info_symbols) */ |
2e4964ad | 733 | |
3f687c78 | 734 | enum address_class aclass BYTE_BITFIELD; |
2e4964ad | 735 | |
bd5635a1 | 736 | }; |
2e4964ad FF |
737 | |
738 | #define PSYMBOL_NAMESPACE(psymbol) (psymbol)->namespace | |
3f687c78 | 739 | #define PSYMBOL_CLASS(psymbol) (psymbol)->aclass |
2e4964ad | 740 | |
bd5635a1 | 741 | \f |
2e4964ad FF |
742 | /* Source-file information. This describes the relation between source files, |
743 | ine numbers and addresses in the program text. */ | |
bd5635a1 RP |
744 | |
745 | struct sourcevector | |
746 | { | |
747 | int length; /* Number of source files described */ | |
748 | struct source *source[1]; /* Descriptions of the files */ | |
749 | }; | |
750 | ||
751 | /* Each item represents a line-->pc (or the reverse) mapping. This is | |
752 | somewhat more wasteful of space than one might wish, but since only | |
753 | the files which are actually debugged are read in to core, we don't | |
ece2e98a | 754 | waste much space. */ |
bd5635a1 RP |
755 | |
756 | struct linetable_entry | |
757 | { | |
758 | int line; | |
759 | CORE_ADDR pc; | |
760 | }; | |
761 | ||
c438b3af JK |
762 | /* The order of entries in the linetable is significant. They should |
763 | be sorted by increasing values of the pc field. If there is more than | |
764 | one entry for a given pc, then I'm not sure what should happen (and | |
765 | I not sure whether we currently handle it the best way). | |
b9298844 | 766 | |
c438b3af | 767 | Example: a C for statement generally looks like this |
b9298844 JK |
768 | |
769 | 10 0x100 - for the init/test part of a for stmt. | |
770 | 20 0x200 | |
771 | 30 0x300 | |
772 | 10 0x400 - for the increment part of a for stmt. | |
773 | ||
c438b3af | 774 | */ |
b9298844 | 775 | |
bd5635a1 RP |
776 | struct linetable |
777 | { | |
778 | int nitems; | |
c438b3af JK |
779 | |
780 | /* Actually NITEMS elements. If you don't like this use of the | |
781 | `struct hack', you can shove it up your ANSI (seriously, if the | |
782 | committee tells us how to do it, we can probably go along). */ | |
bd5635a1 RP |
783 | struct linetable_entry item[1]; |
784 | }; | |
785 | ||
786 | /* All the information on one source file. */ | |
787 | ||
788 | struct source | |
789 | { | |
790 | char *name; /* Name of file */ | |
791 | struct linetable contents; | |
792 | }; | |
793 | ||
2670f34d JG |
794 | /* How to relocate the symbols from each section in a symbol file. |
795 | Each struct contains an array of offsets. | |
796 | The ordering and meaning of the offsets is file-type-dependent; | |
797 | typically it is indexed by section numbers or symbol types or | |
798 | something like that. | |
799 | ||
800 | To give us flexibility in changing the internal representation | |
801 | of these offsets, the ANOFFSET macro must be used to insert and | |
802 | extract offset values in the struct. */ | |
803 | ||
804 | struct section_offsets | |
805 | { | |
806 | CORE_ADDR offsets[1]; /* As many as needed. */ | |
807 | }; | |
808 | ||
809 | #define ANOFFSET(secoff, whichone) (secoff->offsets[whichone]) | |
810 | ||
e74acce4 MA |
811 | /* The maximum possible size of a section_offsets table. */ |
812 | ||
813 | #define SIZEOF_SECTION_OFFSETS \ | |
814 | (sizeof (struct section_offsets) \ | |
815 | + sizeof (((struct section_offsets *) 0)->offsets) * (SECT_OFF_MAX-1)) | |
816 | ||
817 | ||
b86a1b3b | 818 | /* Each source file or header is represented by a struct symtab. |
bd5635a1 RP |
819 | These objects are chained through the `next' field. */ |
820 | ||
821 | struct symtab | |
822 | { | |
2e4964ad | 823 | |
bd5635a1 | 824 | /* Chain of all existing symtabs. */ |
2e4964ad | 825 | |
bd5635a1 | 826 | struct symtab *next; |
2e4964ad | 827 | |
b86a1b3b JK |
828 | /* List of all symbol scope blocks for this symtab. May be shared |
829 | between different symtabs (and normally is for all the symtabs | |
830 | in a given compilation unit). */ | |
2e4964ad | 831 | |
bd5635a1 | 832 | struct blockvector *blockvector; |
2e4964ad | 833 | |
4137c5fc | 834 | /* Table mapping core addresses to line numbers for this file. |
b86a1b3b | 835 | Can be NULL if none. Never shared between different symtabs. */ |
2e4964ad | 836 | |
bd5635a1 | 837 | struct linetable *linetable; |
2e4964ad | 838 | |
ca6a826d | 839 | /* Section in objfile->section_offsets for the blockvector and |
3f687c78 | 840 | the linetable. Probably always SECT_OFF_TEXT. */ |
ca6a826d PS |
841 | |
842 | int block_line_section; | |
843 | ||
844 | /* If several symtabs share a blockvector, exactly one of them | |
845 | should be designed the primary, so that the blockvector | |
846 | is relocated exactly once by objfile_relocate. */ | |
847 | ||
848 | int primary; | |
849 | ||
bd5635a1 | 850 | /* Name of this source file. */ |
2e4964ad | 851 | |
bd5635a1 | 852 | char *filename; |
2e4964ad | 853 | |
bd5635a1 | 854 | /* Directory in which it was compiled, or NULL if we don't know. */ |
2e4964ad | 855 | |
bd5635a1 | 856 | char *dirname; |
2e4964ad | 857 | |
bd5635a1 RP |
858 | /* This component says how to free the data we point to: |
859 | free_contents => do a tree walk and free each object. | |
860 | free_nothing => do nothing; some other symtab will free | |
861 | the data this one uses. | |
b86a1b3b JK |
862 | free_linetable => free just the linetable. FIXME: Is this redundant |
863 | with the primary field? */ | |
2e4964ad FF |
864 | |
865 | enum free_code | |
866 | { | |
867 | free_nothing, free_contents, free_linetable | |
868 | } | |
869 | free_code; | |
870 | ||
bd5635a1 RP |
871 | /* Pointer to one block of storage to be freed, if nonzero. */ |
872 | /* This is IN ADDITION to the action indicated by free_code. */ | |
2e4964ad | 873 | |
bd5635a1 | 874 | char *free_ptr; |
2e4964ad | 875 | |
bd5635a1 | 876 | /* Total number of lines found in source file. */ |
2e4964ad | 877 | |
bd5635a1 | 878 | int nlines; |
2e4964ad | 879 | |
025abdfb JK |
880 | /* line_charpos[N] is the position of the (N-1)th line of the |
881 | source file. "position" means something we can lseek() to; it | |
882 | is not guaranteed to be useful any other way. */ | |
2e4964ad | 883 | |
bd5635a1 | 884 | int *line_charpos; |
2e4964ad | 885 | |
bd5635a1 | 886 | /* Language of this source file. */ |
2e4964ad | 887 | |
bd5635a1 | 888 | enum language language; |
2e4964ad | 889 | |
609fd033 FF |
890 | /* String that identifies the format of the debugging information, such |
891 | as "stabs", "dwarf 1", "dwarf 2", "coff", etc. This is mostly useful | |
892 | for automated testing of gdb but may also be information that is | |
893 | useful to the user. */ | |
894 | ||
895 | char *debugformat; | |
896 | ||
bd5635a1 | 897 | /* String of version information. May be zero. */ |
2e4964ad | 898 | |
bd5635a1 | 899 | char *version; |
2e4964ad | 900 | |
bd5635a1 | 901 | /* Full name of file as found by searching the source path. |
2e4964ad FF |
902 | NULL if not yet known. */ |
903 | ||
bd5635a1 | 904 | char *fullname; |
8aa13b87 | 905 | |
a048c8f5 | 906 | /* Object file from which this symbol information was read. */ |
2e4964ad | 907 | |
a048c8f5 | 908 | struct objfile *objfile; |
a048c8f5 | 909 | |
bd5635a1 RP |
910 | }; |
911 | ||
2e4964ad FF |
912 | #define BLOCKVECTOR(symtab) (symtab)->blockvector |
913 | #define LINETABLE(symtab) (symtab)->linetable | |
914 | ||
915 | \f | |
bd5635a1 RP |
916 | /* Each source file that has not been fully read in is represented by |
917 | a partial_symtab. This contains the information on where in the | |
918 | executable the debugging symbols for a specific file are, and a | |
919 | list of names of global symbols which are located in this file. | |
b0246b3b | 920 | They are all chained on partial symtab lists. |
bd5635a1 RP |
921 | |
922 | Even after the source file has been read into a symtab, the | |
923 | partial_symtab remains around. They are allocated on an obstack, | |
924 | psymbol_obstack. FIXME, this is bad for dynamic linking or VxWorks- | |
925 | style execution of a bunch of .o's. */ | |
b0246b3b | 926 | |
bd5635a1 RP |
927 | struct partial_symtab |
928 | { | |
2e4964ad | 929 | |
bd5635a1 | 930 | /* Chain of all existing partial symtabs. */ |
2e4964ad | 931 | |
bd5635a1 | 932 | struct partial_symtab *next; |
2e4964ad | 933 | |
bd5635a1 | 934 | /* Name of the source file which this partial_symtab defines */ |
2e4964ad | 935 | |
bd5635a1 RP |
936 | char *filename; |
937 | ||
a048c8f5 | 938 | /* Information about the object file from which symbols should be read. */ |
2e4964ad | 939 | |
a048c8f5 | 940 | struct objfile *objfile; |
a048c8f5 | 941 | |
2670f34d | 942 | /* Set of relocation offsets to apply to each section. */ |
2e4964ad | 943 | |
2670f34d JG |
944 | struct section_offsets *section_offsets; |
945 | ||
bd5635a1 RP |
946 | /* Range of text addresses covered by this file; texthigh is the |
947 | beginning of the next section. */ | |
2e4964ad FF |
948 | |
949 | CORE_ADDR textlow; | |
950 | CORE_ADDR texthigh; | |
951 | ||
bd5635a1 RP |
952 | /* Array of pointers to all of the partial_symtab's which this one |
953 | depends on. Since this array can only be set to previous or | |
954 | the current (?) psymtab, this dependency tree is guaranteed not | |
d63aae7f JK |
955 | to have any loops. "depends on" means that symbols must be read |
956 | for the dependencies before being read for this psymtab; this is | |
957 | for type references in stabs, where if foo.c includes foo.h, declarations | |
958 | in foo.h may use type numbers defined in foo.c. For other debugging | |
959 | formats there may be no need to use dependencies. */ | |
2e4964ad | 960 | |
bd5635a1 | 961 | struct partial_symtab **dependencies; |
2e4964ad | 962 | |
bd5635a1 | 963 | int number_of_dependencies; |
2e4964ad | 964 | |
bd5635a1 RP |
965 | /* Global symbol list. This list will be sorted after readin to |
966 | improve access. Binary search will be the usual method of | |
967 | finding a symbol within it. globals_offset is an integer offset | |
4a35d6e9 | 968 | within global_psymbols[]. */ |
2e4964ad FF |
969 | |
970 | int globals_offset; | |
971 | int n_global_syms; | |
972 | ||
bd5635a1 RP |
973 | /* Static symbol list. This list will *not* be sorted after readin; |
974 | to find a symbol in it, exhaustive search must be used. This is | |
975 | reasonable because searches through this list will eventually | |
976 | lead to either the read in of a files symbols for real (assumed | |
977 | to take a *lot* of time; check) or an error (and we don't care | |
4a35d6e9 FF |
978 | how long errors take). This is an offset and size within |
979 | static_psymbols[]. */ | |
2e4964ad FF |
980 | |
981 | int statics_offset; | |
982 | int n_static_syms; | |
983 | ||
bd5635a1 RP |
984 | /* Pointer to symtab eventually allocated for this source file, 0 if |
985 | !readin or if we haven't looked for the symtab after it was readin. */ | |
2e4964ad | 986 | |
bd5635a1 | 987 | struct symtab *symtab; |
2e4964ad | 988 | |
bd5635a1 RP |
989 | /* Pointer to function which will read in the symtab corresponding to |
990 | this psymtab. */ | |
2e4964ad | 991 | |
b0246b3b | 992 | void (*read_symtab) PARAMS ((struct partial_symtab *)); |
2e4964ad | 993 | |
4a35d6e9 FF |
994 | /* Information that lets read_symtab() locate the part of the symbol table |
995 | that this psymtab corresponds to. This information is private to the | |
996 | format-dependent symbol reading routines. For further detail examine | |
997 | the various symbol reading modules. Should really be (void *) but is | |
998 | (char *) as with other such gdb variables. (FIXME) */ | |
2e4964ad | 999 | |
4a35d6e9 | 1000 | char *read_symtab_private; |
2e4964ad FF |
1001 | |
1002 | /* Non-zero if the symtab corresponding to this psymtab has been readin */ | |
1003 | ||
bd5635a1 RP |
1004 | unsigned char readin; |
1005 | }; | |
1006 | ||
1007 | /* A fast way to get from a psymtab to its symtab (after the first time). */ | |
2e4964ad FF |
1008 | #define PSYMTAB_TO_SYMTAB(pst) \ |
1009 | ((pst) -> symtab != NULL ? (pst) -> symtab : psymtab_to_symtab (pst)) | |
bd5635a1 | 1010 | |
bd5635a1 | 1011 | \f |
2e4964ad FF |
1012 | /* The virtual function table is now an array of structures which have the |
1013 | form { int16 offset, delta; void *pfn; }. | |
aec4cb91 | 1014 | |
ea9cdf62 JK |
1015 | In normal virtual function tables, OFFSET is unused. |
1016 | DELTA is the amount which is added to the apparent object's base | |
1017 | address in order to point to the actual object to which the | |
1018 | virtual function should be applied. | |
0b28c260 JK |
1019 | PFN is a pointer to the virtual function. |
1020 | ||
1021 | Note that this macro is g++ specific (FIXME). */ | |
bd5635a1 RP |
1022 | |
1023 | #define VTBL_FNADDR_OFFSET 2 | |
ea9cdf62 | 1024 | |
2e4964ad FF |
1025 | /* Macro that yields non-zero value iff NAME is the prefix for C++ operator |
1026 | names. If you leave out the parenthesis here you will lose! | |
ea9cdf62 | 1027 | Currently 'o' 'p' CPLUS_MARKER is used for both the symbol in the |
0b28c260 JK |
1028 | symbol-file and the names in gdb's symbol table. |
1029 | Note that this macro is g++ specific (FIXME). */ | |
ea9cdf62 | 1030 | |
2e4964ad | 1031 | #define OPNAME_PREFIX_P(NAME) \ |
81afee37 | 1032 | ((NAME)[0] == 'o' && (NAME)[1] == 'p' && is_cplus_marker ((NAME)[2])) |
2e4964ad | 1033 | |
ca6a826d | 1034 | /* Macro that yields non-zero value iff NAME is the prefix for C++ vtbl |
3f687c78 SG |
1035 | names. Note that this macro is g++ specific (FIXME). |
1036 | '_vt$' is the old cfront-style vtables; '_VT$' is the new | |
1037 | style, using thunks (where '$' is really CPLUS_MARKER). */ | |
ca6a826d | 1038 | |
2e4964ad | 1039 | #define VTBL_PREFIX_P(NAME) \ |
81afee37 | 1040 | ((NAME)[0] == '_' \ |
3f687c78 | 1041 | && (((NAME)[1] == 'V' && (NAME)[2] == 'T') \ |
81afee37 FF |
1042 | || ((NAME)[1] == 'v' && (NAME)[2] == 't')) \ |
1043 | && is_cplus_marker ((NAME)[3])) | |
2e4964ad | 1044 | |
ca6a826d | 1045 | /* Macro that yields non-zero value iff NAME is the prefix for C++ destructor |
0b28c260 | 1046 | names. Note that this macro is g++ specific (FIXME). */ |
ca6a826d PS |
1047 | |
1048 | #define DESTRUCTOR_PREFIX_P(NAME) \ | |
81afee37 | 1049 | ((NAME)[0] == '_' && is_cplus_marker ((NAME)[1]) && (NAME)[2] == '_') |
ca6a826d | 1050 | |
bd5635a1 | 1051 | \f |
2e4964ad FF |
1052 | /* External variables and functions for the objects described above. */ |
1053 | ||
1054 | /* This symtab variable specifies the current file for printing source lines */ | |
1055 | ||
1056 | extern struct symtab *current_source_symtab; | |
1057 | ||
1058 | /* This is the next line to print for listing source lines. */ | |
1059 | ||
1060 | extern int current_source_line; | |
1061 | ||
1062 | /* See the comment in symfile.c about how current_objfile is used. */ | |
1063 | ||
1064 | extern struct objfile *current_objfile; | |
bd5635a1 | 1065 | |
81afee37 FF |
1066 | /* True if we are nested inside psymtab_to_symtab. */ |
1067 | ||
1068 | extern int currently_reading_symtab; | |
1069 | ||
3f687c78 SG |
1070 | /* From utils.c. */ |
1071 | extern int demangle; | |
1072 | extern int asm_demangle; | |
1073 | ||
56e327b3 FF |
1074 | /* symtab.c lookup functions */ |
1075 | ||
1076 | /* lookup a symbol table by source file name */ | |
1077 | ||
b0246b3b FF |
1078 | extern struct symtab * |
1079 | lookup_symtab PARAMS ((char *)); | |
1080 | ||
56e327b3 FF |
1081 | /* lookup a symbol by name (optional block, optional symtab) */ |
1082 | ||
b0246b3b FF |
1083 | extern struct symbol * |
1084 | lookup_symbol PARAMS ((const char *, const struct block *, | |
e02a2ad9 | 1085 | const namespace_enum, int *, struct symtab **)); |
b0246b3b | 1086 | |
56e327b3 FF |
1087 | /* lookup a symbol by name, within a specified block */ |
1088 | ||
b0246b3b FF |
1089 | extern struct symbol * |
1090 | lookup_block_symbol PARAMS ((const struct block *, const char *, | |
e02a2ad9 | 1091 | const namespace_enum)); |
b0246b3b | 1092 | |
56e327b3 FF |
1093 | /* lookup a [struct, union, enum] by name, within a specified block */ |
1094 | ||
b0246b3b FF |
1095 | extern struct type * |
1096 | lookup_struct PARAMS ((char *, struct block *)); | |
1097 | ||
1098 | extern struct type * | |
1099 | lookup_union PARAMS ((char *, struct block *)); | |
1100 | ||
1101 | extern struct type * | |
1102 | lookup_enum PARAMS ((char *, struct block *)); | |
1103 | ||
56e327b3 FF |
1104 | /* lookup the function corresponding to the block */ |
1105 | ||
b0246b3b FF |
1106 | extern struct symbol * |
1107 | block_function PARAMS ((struct block *)); | |
1108 | ||
56e327b3 FF |
1109 | /* from blockframe.c: */ |
1110 | ||
1111 | /* lookup the function symbol corresponding to the address */ | |
1112 | ||
b0246b3b FF |
1113 | extern struct symbol * |
1114 | find_pc_function PARAMS ((CORE_ADDR)); | |
1115 | ||
56e327b3 FF |
1116 | /* lookup the function corresponding to the address and section */ |
1117 | ||
1118 | extern struct symbol * | |
1119 | find_pc_sect_function PARAMS ((CORE_ADDR, asection *)); | |
1120 | ||
1121 | /* lookup function from address, return name, start addr and end addr */ | |
1122 | ||
ad3b8c4a JM |
1123 | extern int |
1124 | find_pc_partial_function PARAMS ((CORE_ADDR, char **, | |
56e327b3 | 1125 | CORE_ADDR *, CORE_ADDR *)); |
b0246b3b FF |
1126 | |
1127 | extern void | |
1128 | clear_pc_function_cache PARAMS ((void)); | |
1129 | ||
ad3b8c4a JM |
1130 | extern int |
1131 | find_pc_sect_partial_function PARAMS ((CORE_ADDR, asection *, | |
1132 | char **, CORE_ADDR *, CORE_ADDR *)); | |
1133 | ||
56e327b3 FF |
1134 | /* from symtab.c: */ |
1135 | ||
1136 | /* lookup partial symbol table by filename */ | |
1137 | ||
b0246b3b FF |
1138 | extern struct partial_symtab * |
1139 | lookup_partial_symtab PARAMS ((char *)); | |
1140 | ||
56e327b3 FF |
1141 | /* lookup partial symbol table by address */ |
1142 | ||
b0246b3b FF |
1143 | extern struct partial_symtab * |
1144 | find_pc_psymtab PARAMS ((CORE_ADDR)); | |
1145 | ||
56e327b3 FF |
1146 | /* lookup partial symbol table by address and section */ |
1147 | ||
1148 | extern struct partial_symtab * | |
1149 | find_pc_sect_psymtab PARAMS ((CORE_ADDR, asection *)); | |
1150 | ||
1151 | /* lookup full symbol table by address */ | |
1152 | ||
b0246b3b FF |
1153 | extern struct symtab * |
1154 | find_pc_symtab PARAMS ((CORE_ADDR)); | |
1155 | ||
56e327b3 FF |
1156 | /* lookup full symbol table by address and section */ |
1157 | ||
1158 | extern struct symtab * | |
1159 | find_pc_sect_symtab PARAMS ((CORE_ADDR, asection *)); | |
1160 | ||
1161 | /* lookup partial symbol by address */ | |
1162 | ||
b0246b3b FF |
1163 | extern struct partial_symbol * |
1164 | find_pc_psymbol PARAMS ((struct partial_symtab *, CORE_ADDR)); | |
1165 | ||
56e327b3 FF |
1166 | /* lookup partial symbol by address and section */ |
1167 | ||
1168 | extern struct partial_symbol * | |
1169 | find_pc_sect_psymbol PARAMS ((struct partial_symtab *, CORE_ADDR, asection *)); | |
1170 | ||
b0246b3b FF |
1171 | extern int |
1172 | find_pc_line_pc_range PARAMS ((CORE_ADDR, CORE_ADDR *, CORE_ADDR *)); | |
1173 | ||
1174 | extern int | |
1175 | contained_in PARAMS ((struct block *, struct block *)); | |
1176 | ||
1177 | extern void | |
1178 | reread_symbols PARAMS ((void)); | |
1179 | ||
404f69a8 JK |
1180 | /* Macro for name of symbol to indicate a file compiled with gcc. */ |
1181 | #ifndef GCC_COMPILED_FLAG_SYMBOL | |
1182 | #define GCC_COMPILED_FLAG_SYMBOL "gcc_compiled." | |
1183 | #endif | |
1184 | ||
1185 | /* Macro for name of symbol to indicate a file compiled with gcc2. */ | |
1186 | #ifndef GCC2_COMPILED_FLAG_SYMBOL | |
1187 | #define GCC2_COMPILED_FLAG_SYMBOL "gcc2_compiled." | |
1188 | #endif | |
1189 | ||
b0246b3b FF |
1190 | /* Functions for dealing with the minimal symbol table, really a misc |
1191 | address<->symbol mapping for things we don't have debug symbols for. */ | |
1192 | ||
21578747 JG |
1193 | extern void prim_record_minimal_symbol PARAMS ((const char *, CORE_ADDR, |
1194 | enum minimal_symbol_type, | |
1195 | struct objfile *)); | |
b0246b3b | 1196 | |
3f687c78 | 1197 | extern struct minimal_symbol *prim_record_minimal_symbol_and_info |
21578747 JG |
1198 | PARAMS ((const char *, CORE_ADDR, |
1199 | enum minimal_symbol_type, | |
1200 | char *info, int section, | |
56e327b3 | 1201 | asection *bfd_section, |
21578747 | 1202 | struct objfile *)); |
51b57ded | 1203 | |
3f687c78 SG |
1204 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
1205 | extern CORE_ADDR find_stab_function_addr PARAMS ((char *, | |
1206 | struct partial_symtab *, | |
1207 | struct objfile *)); | |
1208 | #endif | |
1209 | ||
b0246b3b | 1210 | extern struct minimal_symbol * |
3f687c78 SG |
1211 | lookup_minimal_symbol PARAMS ((const char *, const char *, struct objfile *)); |
1212 | ||
1213 | extern struct minimal_symbol * | |
1214 | lookup_minimal_symbol_text PARAMS ((const char *, const char *, struct objfile *)); | |
b0246b3b | 1215 | |
e74acce4 MA |
1216 | struct minimal_symbol * |
1217 | lookup_minimal_symbol_solib_trampoline PARAMS ((const char *, | |
1218 | const char *, | |
1219 | struct objfile *)); | |
1220 | ||
b0246b3b FF |
1221 | extern struct minimal_symbol * |
1222 | lookup_minimal_symbol_by_pc PARAMS ((CORE_ADDR)); | |
1223 | ||
56e327b3 FF |
1224 | extern struct minimal_symbol * |
1225 | lookup_minimal_symbol_by_pc_section PARAMS ((CORE_ADDR, asection *)); | |
1226 | ||
2fe3b329 PS |
1227 | extern struct minimal_symbol * |
1228 | lookup_solib_trampoline_symbol_by_pc PARAMS ((CORE_ADDR)); | |
1229 | ||
1230 | extern CORE_ADDR | |
1231 | find_solib_trampoline_target PARAMS ((CORE_ADDR)); | |
1232 | ||
b0246b3b FF |
1233 | extern void |
1234 | init_minimal_symbol_collection PARAMS ((void)); | |
1235 | ||
1236 | extern void | |
1237 | discard_minimal_symbols PARAMS ((int)); | |
1238 | ||
1239 | extern void | |
1240 | install_minimal_symbols PARAMS ((struct objfile *)); | |
bd5635a1 | 1241 | |
3f687c78 SG |
1242 | /* Sort all the minimal symbols in OBJFILE. */ |
1243 | ||
1244 | extern void msymbols_sort PARAMS ((struct objfile *objfile)); | |
1245 | ||
bd5635a1 RP |
1246 | struct symtab_and_line |
1247 | { | |
1248 | struct symtab *symtab; | |
56e327b3 | 1249 | asection *section; |
025abdfb JK |
1250 | /* Line number. Line numbers start at 1 and proceed through symtab->nlines. |
1251 | 0 is never a valid line number; it is used to indicate that line number | |
1252 | information is not available. */ | |
bd5635a1 | 1253 | int line; |
025abdfb | 1254 | |
bd5635a1 RP |
1255 | CORE_ADDR pc; |
1256 | CORE_ADDR end; | |
1257 | }; | |
1258 | ||
56e327b3 FF |
1259 | #define INIT_SAL(sal) { \ |
1260 | (sal)->symtab = 0; \ | |
1261 | (sal)->section = 0; \ | |
1262 | (sal)->line = 0; \ | |
1263 | (sal)->pc = 0; \ | |
1264 | (sal)->end = 0; \ | |
1265 | } | |
1266 | ||
bd5635a1 RP |
1267 | struct symtabs_and_lines |
1268 | { | |
1269 | struct symtab_and_line *sals; | |
1270 | int nelts; | |
1271 | }; | |
1272 | ||
2e4964ad FF |
1273 | /* Given a pc value, return line number it is in. Second arg nonzero means |
1274 | if pc is on the boundary use the previous statement's line number. */ | |
bd5635a1 | 1275 | |
b0246b3b FF |
1276 | extern struct symtab_and_line |
1277 | find_pc_line PARAMS ((CORE_ADDR, int)); | |
bd5635a1 | 1278 | |
56e327b3 FF |
1279 | /* Same function, but specify a section as well as an address */ |
1280 | ||
1281 | extern struct symtab_and_line | |
1282 | find_pc_sect_line PARAMS ((CORE_ADDR, asection *, int)); | |
1283 | ||
fb155ce3 JK |
1284 | /* Given an address, return the nearest symbol at or below it in memory. |
1285 | Optionally return the symtab it's from through 2nd arg, and the | |
1286 | address in inferior memory of the symbol through 3rd arg. */ | |
1287 | ||
1288 | extern struct symbol * | |
1289 | find_addr_symbol PARAMS ((CORE_ADDR, struct symtab **, CORE_ADDR *)); | |
1290 | ||
bd5635a1 | 1291 | /* Given a symtab and line number, return the pc there. */ |
b0246b3b | 1292 | |
ad3b8c4a JM |
1293 | extern int |
1294 | find_line_pc PARAMS ((struct symtab *, int, CORE_ADDR *)); | |
b0246b3b FF |
1295 | |
1296 | extern int | |
404f69a8 | 1297 | find_line_pc_range PARAMS ((struct symtab_and_line, |
b86a1b3b | 1298 | CORE_ADDR *, CORE_ADDR *)); |
b0246b3b FF |
1299 | |
1300 | extern void | |
1301 | resolve_sal_pc PARAMS ((struct symtab_and_line *)); | |
bd5635a1 | 1302 | |
2e4964ad FF |
1303 | /* Given a string, return the line specified by it. For commands like "list" |
1304 | and "breakpoint". */ | |
bd5635a1 | 1305 | |
b0246b3b FF |
1306 | extern struct symtabs_and_lines |
1307 | decode_line_spec PARAMS ((char *, int)); | |
1308 | ||
1309 | extern struct symtabs_and_lines | |
1310 | decode_line_spec_1 PARAMS ((char *, int)); | |
1311 | ||
1312 | extern struct symtabs_and_lines | |
6f87ec4a | 1313 | decode_line_1 PARAMS ((char **, int, struct symtab *, int, char ***)); |
bd5635a1 | 1314 | |
35fcebce PB |
1315 | #if MAINTENANCE_CMDS |
1316 | ||
56e327b3 FF |
1317 | /* Symmisc.c */ |
1318 | ||
35fcebce PB |
1319 | void |
1320 | maintenance_print_symbols PARAMS ((char *, int)); | |
1321 | ||
1322 | void | |
1323 | maintenance_print_psymbols PARAMS ((char *, int)); | |
1324 | ||
1325 | void | |
1326 | maintenance_print_msymbols PARAMS ((char *, int)); | |
1327 | ||
1328 | void | |
1329 | maintenance_print_objfiles PARAMS ((char *, int)); | |
1330 | ||
2fe3b329 PS |
1331 | void |
1332 | maintenance_check_symtabs PARAMS ((char *, int)); | |
1333 | ||
56e327b3 FF |
1334 | /* maint.c */ |
1335 | ||
1336 | void | |
1337 | maintenance_print_statistics PARAMS ((char *, int)); | |
1338 | ||
35fcebce PB |
1339 | #endif |
1340 | ||
b0246b3b FF |
1341 | extern void |
1342 | free_symtab PARAMS ((struct symtab *)); | |
5c43db6b | 1343 | |
bd5635a1 | 1344 | /* Symbol-reading stuff in symfile.c and solib.c. */ |
b0246b3b FF |
1345 | |
1346 | extern struct symtab * | |
1347 | psymtab_to_symtab PARAMS ((struct partial_symtab *)); | |
1348 | ||
1349 | extern void | |
1350 | clear_solib PARAMS ((void)); | |
1351 | ||
1352 | extern struct objfile * | |
1353 | symbol_file_add PARAMS ((char *, int, CORE_ADDR, int, int, int)); | |
bd5635a1 RP |
1354 | |
1355 | /* source.c */ | |
bd5635a1 | 1356 | |
b0246b3b | 1357 | extern int |
b9298844 | 1358 | identify_source_line PARAMS ((struct symtab *, int, int, CORE_ADDR)); |
b0246b3b FF |
1359 | |
1360 | extern void | |
1361 | print_source_lines PARAMS ((struct symtab *, int, int, int)); | |
1362 | ||
1363 | extern void | |
1364 | forget_cached_source_info PARAMS ((void)); | |
1365 | ||
1366 | extern void | |
1367 | select_source_symtab PARAMS ((struct symtab *)); | |
1368 | ||
d63aae7f | 1369 | extern char **make_symbol_completion_list PARAMS ((char *, char *)); |
b0246b3b | 1370 | |
ad3b8c4a JM |
1371 | extern void _initialize_source PARAMS ((void)); |
1372 | ||
b0246b3b FF |
1373 | /* symtab.c */ |
1374 | ||
1375 | extern struct partial_symtab * | |
1376 | find_main_psymtab PARAMS ((void)); | |
1377 | ||
1378 | /* blockframe.c */ | |
1379 | ||
1380 | extern struct blockvector * | |
1381 | blockvector_for_pc PARAMS ((CORE_ADDR, int *)); | |
bd5635a1 | 1382 | |
56e327b3 FF |
1383 | extern struct blockvector * |
1384 | blockvector_for_pc_sect PARAMS ((CORE_ADDR, asection *, int *, | |
1385 | struct symtab *)); | |
ad3b8c4a | 1386 | |
b0246b3b | 1387 | /* symfile.c */ |
4a35d6e9 | 1388 | |
313dd520 JK |
1389 | extern void |
1390 | clear_symtab_users PARAMS ((void)); | |
1391 | ||
b0246b3b FF |
1392 | extern enum language |
1393 | deduce_language_from_filename PARAMS ((char *)); | |
4a35d6e9 | 1394 | |
3f687c78 SG |
1395 | /* symtab.c */ |
1396 | ||
1397 | extern int | |
1398 | in_prologue PARAMS ((CORE_ADDR pc, CORE_ADDR func_start)); | |
1399 | ||
56e327b3 FF |
1400 | extern struct symbol * |
1401 | fixup_symbol_section PARAMS ((struct symbol *, struct objfile *)); | |
1402 | ||
ad3b8c4a JM |
1403 | /* Symbol searching */ |
1404 | ||
1405 | /* When using search_symbols, a list of the following structs is returned. | |
1406 | Callers must free the search list using free_symbol_search! */ | |
1407 | struct symbol_search | |
1408 | { | |
1409 | /* The block in which the match was found. Could be, for example, | |
1410 | STATIC_BLOCK or GLOBAL_BLOCK. */ | |
1411 | int block; | |
1412 | ||
1413 | /* Information describing what was found. | |
1414 | ||
1415 | If symtab abd symbol are NOT NULL, then information was found | |
1416 | for this match. */ | |
1417 | struct symtab *symtab; | |
1418 | struct symbol *symbol; | |
1419 | ||
1420 | /* If msymbol is non-null, then a match was made on something for | |
1421 | which only minimal_symbols exist. */ | |
1422 | struct minimal_symbol *msymbol; | |
1423 | ||
1424 | /* A link to the next match, or NULL for the end. */ | |
1425 | struct symbol_search *next; | |
1426 | }; | |
1427 | ||
1428 | extern void search_symbols PARAMS ((char *, namespace_enum, int, char **, struct symbol_search **)); | |
1429 | extern void free_search_symbols PARAMS ((struct symbol_search *)); | |
1430 | ||
b0246b3b | 1431 | #endif /* !defined(SYMTAB_H) */ |